As I am unfamilliar with ammonium perchlorate, I have some of it that someone gave me from an Estes rocket engine. I have done fireworks before and I need advice on it's sensitivity (e.g. whether or not I can crush it with an unused mortar and pestle) without getting my hand blown off, or worse. Also I hear that it coats when wet with water and dried, making it burn faster. I am asking if I can crush it safely with a mortar and pestle? Also when to wet it; either before or after I crush it?
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